Mechanism for procuring and controlling the broadside movement of metal bars



Nov. 13, 1928. 1,691,645

F. P. DAHLSTROM MECHANISM FOR PROCURING AND CONTROLLING THE BROADSIDE MOVEMENT OF METAL BARS Filed March 25, 1927 2 Sheets-Sheet 1 I I 23738 1. I| 5 IL 3 I Q ylyllilylyil ylylylylyyyi 4 .9 1y4 r r r vh rhr r v F. P. DAHLSTROM MECHANISM FOR PROCURING AND CONTROLLING THE BROADSIDE MOVEMENT OF METAL BARS Nov. 13, 1928. 1,691.645

Filed March 25. 1927 2 Sheets-Sheet N U M'iEn s r in the di ilerent figures;

Patented Nov. 13, 1928.;

,IERANK 1a. ZDAHLSTR-OM, or woncnsrna, MASSACHUSETTS," assienoatro ivroneancom STRUCTION comm-NY, MASSACHUSETTS.

on WORCESTER, Messiaen-centers, A *oonroRA'rioN' or MECHA ISM on PROOUEING AND oonrnotmne' riin BRoAnsIDnMovnMENT or METAL BARS.

Application 'filed March 25, 19.27." Serial No 178,436

The present inventionrelates ingeneral to the automatic handhng of hot metal bars or billets, such as constitute the product of a rolling mill. The invention residesi'in certain mechanism, operable in response to the.

apparatus, including a cooling bed, to which theinvention isapp'lied.

Fig. 2 is a vievvfshowing, in side elevation certain of the mechanism of Fig. .1,' and showing diagrammatically the electrical cennections and thelike Which the automatic control is secured. j r

- Li-kc rct'cr'enc'e characters reterto like parts Referring to F 1, a series of alinedcon- .vcy'or rolls 1, 1 may constitute, for example,

thehot runout of a rolling mill, said rolls being driven in any suitable Way as 'by bevel gearing 2, 2 froma-coininon drlv-lng; shaft Each successive bar or billet as run 'out longitudinally on said rolls-1.1 is adapted. to be pushed or kicked off laterally (to the right in Fig.1) from said rolls, onto a' cooling bed or other receiving device of conw entional con:- strnction; as here shown, such a cooling'bed, orreceiving' device, may consist ota plurality of spaced parallel later-ally extending racks t, 1, having a plurality of al'ined sets or rows of bar-receiving notches, thefirstrow of which, as shown, may take the form of a trough 5, constituted in part by the ends ot said racks which 'lie'in close proximity to the cenveyor rolls 1, 1. Thus each bar or billet as moved sidewise of? of said rolls, will drop .by gravity intov the first notch or trough 5 of thecoolingfibed. I y

In a manner Well knownin apparatus of this class, provision is made for mechanically V pushingeach bar orbillet sidew i'se off the rolls 1, 1 and into the first of -the cooling, bed as here'shoWn, a shaft 6, rotatablyinount ed in suitable bearings T'above therolls 1', 1, has extendingdownwardly a plurality of spaced kick-off arms'ii, adapted to engage portions of the bar or billeolyiiig'interm'ediate'of said :rolls. 'Rotati-on of said shaft 6 in a counterclockwise direction carries the kick-oil arms 8 againstthebillet and pushes the latter sidewise across the conveyor'rolls 1,

1 until itsdrops by gravity in the first trough or notch 5,501 the cooling; bed. [Said cooling bed, in any-manner gwe-ll knownin the art, may beoperated mechanically toprocure the broadside stepby-stepj ino veinentaoi'f to the second lo w'o'f notches 5', 5, and so on across the full length of the racks 1, 4; as

herein shown, said ra-cks,,fto accomplish this result, are inounted'tor oscjillatory'mo einent in suitable hearingstl, 9 and-have such rho-.vement imparted thereto in unison by their: con-] nection to a common openat-ing' link 10,Which is moved-back and'atorth-by :a suitable crank arm 11, secured to a crank shaft 12.

The cooling bed, constituted .by: the rowot parallel racks 1, 1 gext'ends, 'as here shown,

lover aflength which 18 substantially double the l ngth 01- the relatively-short bars or *billets a a that are run out 'on'the' conveyor rolls'l, 1. Thus each row ofnotchesinsa d cooling bed can accommodate two of such bars or billets a, a, lying end to end, or in tandern and' it-is one of th'e'objectso-f the the loarsdfrornthe first-row ofnotchesh, 5. I

present: inventionto obtain, automatically, the transfer of successWely'run io'ut" bars or billets the :to the firstnotch of the cooling 'bedin this particular relation, and another obi ect is: to obtain, automatically, thefstep -by-j step; ornotch-by-notch,movement of-thebars,

in such multiple arrangement, across the cooling bed, all in the absence of any necessityf'for intervention, on the part of an operator, to control either the lrick oif mechanism orthe racking mechanism. r i To this end, trigger I divices -13 and'yle are located in the path of bars runo'ut on the rolls 1, 1, the trigger 13' being disposed about mid.- way the length of the cooling bed, and the trigger 14 substantially in line with the Star 6 d of said. bed These triggers l andlt,

*of" any Well known type, present surfaces which are adapted to be struck and depressed A by the front ends of bars or billets carried forward by the conveyor rolls 1, 1, such operation of the triggers,in the manner hereinafter ClGSCIlbGd,C21US1I1g the actuat on of the lk'lCrI- ,off 8, 8 to move the material sidewise off said rolls; the triggers 13 and 14, either by grew, ity or by spring'action, thereupon resume theirnormal positions, in readiness to be c struck and depressed {by subsequent bars or billets that are run out on the rolls 1, 1.

Other trigger devices 15and 16, of substantially the same type, are disposed so as to project slightly above the" bottom or supporting surface provided by the first trough.

or notch 5', 5 of gthe cooling bed, the trigger '15 adapted to be struck and depressed when a bar or billeta is delivered sidewise off the rolls 1,1 into'the far end of the first row of cooling bed notches,'.and-the trigger 16 adapt edto be struck and depressed when a bar or billet a is delivered sidewise off the rolls 1', 1 into the other endiof said.- first row of notches.

The wiring diagram, Fig. 2, indicates the way'in' which various electricalcircuits, con trolling the actuation of the kick-off and racking mechanisms, are completed, by the depression of the several triggers 1'3, 14, and 16.1rFor example, the trigger 14,wh en depressed, electrically connects the contacts :1?

and 18-, causing current to flow across the supply leads19 and 20, by way of a solenoid coil 21. v Anotherelectricalcircuit adapted to energize the solenoid coil 21 is completed when thetwotriggers 13 and 15 are depressed, the

respective pairs ofcontacts 22, 23, and 24, 25,

' whichareconnected by said triggers, being, as

shown, in series; j The depression of trigger 16 electrically, connects the contacts26 and 27 "and-.cestablishes' an electrical circuit through solenoid coil 28 whenever vthe coil 28 is thus energized, depression of the two triggers 13 and 15 which would ordinarily, as above described, energize the solenoid coil 21, is rendered ineffective; this byreason of the fact that the movable core 29 of sol'enoidcoil 28,

which normally electrically connects the two contacts'30'and31 in the particular-circuit controlled by triggers '13and 15, is drawn away from said'contacts' by the energization ofcoil28. I

Q {The operation of the mechanism as thus far described is as follows --Assume that no bars or billets are on the conveyor rolls 1, 1

. or in the first row of notches 5, 5 of the cooling bed,'all thetriggers 13, 14, 15 and 16 being un'depressed. The firstbar a that is'then run out on rolls 1, 1 strikes, by its front end, aga nst trigger 1-3 and depressessaid trigger, but such depression, has no effect on the sole noid coil 21, becanse no circuit is completed at this tirneby said triggers connection of the contactsw22 and 23, the contacts 24 and 25 in series therew-ith being unconnected. Confar end thereof and, in

' I The next or third bar sequently, said first bar a continues to be ad- 7 vanced by the rolls 1, 1 until its front end strikes and-depresses thetrigger14'; with the contacts-17 and 18 thus connected, current billet a is pushed off the rolls 1, 1 and drops so i into the first notch of the cooling bed at the so doing, depresses the trigger 15.

The rnext's'ucceeding bar or billet a carried forward by the rolls 1, 1 strikes, by its first end, against the triggerl and this time the depression of said trigger, connecting the connoid coil 21 because the preceding bar or billet, now in the first notch of the cooling bed,keeps tacts 22 and 23, is effective to energize the solethe trigger 15 depressed, sons to connect'the contacts 24 and 25. Thus this secondcbar or trigger 13; as soon as it strikes said trigger, the solenold coil 21 is energized, and th1s. causesanimmediate actuation of thekick-of'f arms 8, 8 in the manner above described, to,

disch arge sa d second bar sidewise off the rolls and into the first notch of the cooling bed, at the portion thereof unoccupied by the first barorbilleta. I, I

7 As said second bar or billet (1 drops side'wise into said first notch, it strikes and depresses the trigger 16, thereby connecting the two contacts 26 and" 27 and causing current to flow through the solenoid coil 28. The energization of this coil 28 effects sufficient movement billet only travels on the'rolls 1, 1 as far as the V i of core member 29' to shift, through suitable 7 connections 36, a clutching element 37 on crank shaft 12 into clutching engagement with a constantly rotating element 38, driven fromany suitablesource of power, not shown.

This produces a single rotation of said crank shaft 12, thereby oscillating the racks 4,4 in unison, sothat, in a inannerwell known in cooling beds of this class, the two barsor billets-a, a in the first row of notches 5, 5 are whereupon the triggers 15 and 16 resume their normal posit-ions.

or billet a run out on the rolls 1, 1 is handled automatically in pre cisely the same manner as the firstbar or billet 5 above described,-runningpast the trigger 13 and engagingthe trigger 14 soas tobe kicked off, in response to suchengagement, into the far end of the first notchof the cooling bed.

transferredto the second row of notches5', 5",

The fourth barorbillet produces-in the same way as the second bar or billetthe completion i 7 length of oneofsaid bars, and mechanism,

responsive to the engagement of said trigger devices the bars, for procuringsaidbroadslde-movements on a series of successive bars in regular order, b'eginnmg W1th the engagementzof the first baro-fthe SGIlGS'Witll the last-trigger device, and ending withtheen gageme'nt of thelast'har of the series with the first trigger device.

I 9. In mechanismof the class described, longitudinal conveying means -for-succcssively delivered bars, bar-receiving means alongside said conveying means, devices operable on'each'barto transfer it broadside from said conveying means to said receiving means, and means forprocuringthe/opera- 1 ti on ofsaid transfer devices, for a given series I of successively'delivered bars, in response to each 'ba'rs travel on-said conveyingv means bar next-preceding it in the se'riesf I r a .10. Inimiechanism ofthe class described, longitudin al conveying "means for succ'es'- through a distancele'ss than travelled by the sively delivered bars,"bar-receiving means alongside said' conveyingmeans, devices 0perable on each bar-to transferitbroadside from said conveying means to said receiving means, a series oftriggers spaced apart in the;

. path of the bars on said' conveying means,

means responsive to engagement. of the .last of'said triggers by the first of a 'givenseriesof bars for actuating. said transfer-devices,- and means a responsive to" engagement of a precedingtri'gger by a succeedingzbar of said series for again actuating said transfer-gdefir with saidpreceding trigger.

vices.

110111 mechanism of the class-described,

longitudinal conveying means for 'succes sively "delivered bars, bar-receivingumeans alongside said conveying means, devices oper; able oneachbar to transfer it broadside from said conveying means to said receiving means, a series of triggers spaced apart in the 1 path o'fthe bars .on saidconveying means, means responsive to engagement of the last of sai dtriggers by the firstof a'givenseries of bars for actuating "said transfer f devices, meansrespo'nsive to engagement ofa-preced ing'trigger by a succeeding bar of said series for again actuating said transfer devices, and

I means for rendering ineffective on said transfer devices the'engagement of said first bar 13. In mechanism 12. In mechanism of-theclass described, longitudinal conveymgfmeans for successivcly delivered bars, bar-receiving means alongside said conveying means, devices operable on each bar to transfer itbroadside from said conveying means to said receiving means, and a series of triggersspaced apart in the path ofbars on said conveying means for procuring the action of said transfer devices upon engagement of the first of aseries of bars with the last of said triggers,and upon theengagement in order of each trigger preceding by the next succeeding bar of said serles. 1

of the class described, longitudinal conveying means for successively delivered bars, bar-receiving means alongside 'said conveying means, devices} operable on each bar to' transfer it broadside from said conveying means to said receiving means, and meansresponsiv'e to thetransfer i of one barto saidreceiving means for causing the next succeeding bar to be transferred from a diflt'erentlocation on said conveying means. r i

14:. In mechanism" of the class described,

longitudinal conveying means for success vely delivered bars, bar-receiving means alongside said conveying means; devices operable on each bar toftransfer it'broadside from said conveying means to said receiving means, and means, responsive totheitransfer.

ofione bar to'saidreceiving means, for causing-the'next succeeding barto be transferred before it-has travelled on said conveying means to the location reached by said-firstmentioned bar.;

1 5.In mechanism of the class-described, longitudinal conveying means i for successively delivered bars, bar-receivingmeans alongside said conveying, means, devices operable on each bar to transferitbroadside from" said conveyingmeans to said receiving means, atrigger device on said receiving means, andmeans, responsive to engagement of a bar with said trigger device for causing actuation of said transfer devices on the next,

succeeding bar before it reaches. on: said conveying means the point from which'th'e first;

mentioned bar was transferred. l

r '16. In mechanism ofthe class described.

longitudinal; conveying means for successively delivered bars, bar-receivingmeans alongside said conveying means, devices operable oneach bar to. transfer it broadside from saidconveying means to s'aidreceiving means, a series of triggers spaced apart in the path of bars on said conveylng means, means responsive to engagement of the last of said triggers by the first of a given series of bars for actuating said transfer devices;{'

and atrigger'deviceon said receiving means, adapted. when engaged by saidba-r to render operatlve the preceding trigger on said conveying means, thereby to actuate saidtransfer devices when .said last-mentioned trigger,

1 reerees 17; In me hanism of the assesses,

longitudinal conveyingmeans for. successively delivered bars, acooling bed alongside said conveying means,- devic es operable to transfer each bar broadside from said conveying'r-meansto-said acooling bed, and means made operable on said. cooling bed by the transfer of a given number of bars thereto, for procuring the further broadside move ment of said bars inunison.

18. In mechanism of the class described, longitudinal conveying means for successively delivered bars, a cooling bed ontowhich said bars are successively moved broadside from said conveying means, and means set inoperation by the deposit of the last of a given number of bars on said cooling bed for actu-v ating said bed, to cause the broadside movement of bars thereon.

19.111 mechanism of the class described, longitudinal conveying means for successsively delivered bars, a cooling bed onto which are deposited successive sets of said bars in longitudinal 'alinement, and means set in operation by deposit of the last bar of each set for actuating said bed to move all Y the bars thereon broadside unison;

20. In mechanism of the class described, longitudinal conveying means for successively delivered bars, a cooling bed providing rows of bar-receiving notches running length- Wise of said conveying means, means for Ce positing a series ofsuccessive bars, in aline ment, in the first row of notches of said bed, and means set in operation by the deposit of the last bar of said series for actuating said bed, thereby to transfer said series of bars to the second roW of notches of said bed.

21. In mechanism of the class described, longitudinal conveying means for successively delivered bars, a cooling bed alongside said conveying means, devices operableto transfer each bar broadside from, said conveying means to said cooling bed, a series of spaced triggers inthe path of the bars on said conveying means for the operation of said transfer devices a second series of triggers on said cooling bed, each adapted to be engaged by one of the bars transferred to said bed, and means for alternately rendering operative and inoperative a trigger of the first series,

in response to successive engagements of bars With two different triggers of the second series.

22. In mechanism of the class described, longitudinal conveying "means for successively delivered bars, a cooling bed alongside said conveying means, devices operable to transfer each bar broadside from said conveying means to-said cooling bed, a pair of triggers spaced apart on said conveying means by substantially the length of a bar,

firstoftwo successive bars, and the firstone for operative engagement by the last-of-two successive barsymeans: for actuating said transfer devices 111 :response to the I operatlve engagements ofsa1d=tr1ggers, and means resp'onsi-ve tothetransfer :toflsaid bed'of the first of said barssfor renderingfsaid' first trigger operative, When engaged by the second. bar.

said conveying means, devices operable to transfer each bar broadside from said con, veying means to said cooling bed, apair of triggers spaced apart on said. conveying means by substantially the length of a bar,

the last one foroperative engagement by the first of two successive bars, and the first one 7 for operative engagement by the last of tWo successive bars, means for actuating said transfer devices in response to the operative engagements of said triggers, means respon sive to the transfer to said bed of the first of said bars for rendering said first trigger operative, when engaged by the second bar, and

means responsive to the transfer to said bed of the second of said bars for rendering said first trigger inoperative, when engaged by the first of two more successive bars.

24. In mechanism of the class described, longitudinal conveying means for successively delivered bars, a cooling bed alongside said conveying means, devices operable to transfer each bar broadside from saidconveying means to said cooling beolpa pair [of triggers spaced apart on said conveying means by substantially the lengthof a bar, the last one for operative engagement by the first of two successive bars, and the first one for operative engagement by the last of two successive bars, means for actuating said transfer devices 111- response to the operat ve engagements of said triggers, means'respom s1ve to the transfer to sald bed of the first of said bars for renderin said first trigger operative, When engaged y the second bar, and means responsive to the transfer to said bed of the second of said bars for rendering Y said first; trigger inoperative,;vvhen engaged by the first of two more successive bars, and

rue

for procuring the'actuation of said bed, to i move the two-bars received thereon broadr cessive bars on said receiving means, and,

the last one for operative engagement by the means for further procuring the operation of gitudinal alinement of a plurality of sucerafionu i. r V i ;26.:In mefchamsm of the class described, "10h ltudinal conveylng means for successive- 5 1y eliveredrbarga cooling bed onto which are'ideposited successive sets of said bars in longitudinal a11nement,1aut0mat1c means set in operation by deposit of the last bar ofeach Tset' for atiiating 'saidbed to umbve all the bars thereon broadside in unison, and mean s for further securing'it hev actuat on ofls'aid bed, 7 for broadside im'ovement of .theiiibmm thereon, at the Will ofvanaopemtor.v J 

